| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Amazônia Oriental. |
|
Data corrente: |
29/03/2012 |
|
Data da última atualização: |
11/11/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
PAULA, F. R. de; FERRAZ, S. F. de B.; GERHARD, P.; VETTORAZZI, C. A.; FERREIRA, A. |
|
Afiliação: |
FELIPE ROSSETTI DE PAULA, ESALQ; SILVIO FROSINI DE BARROS FERRAZ, ESALQ; PEDRO GERHARD, CPATU; CARLOS ALBERTO VETTORAZZI, ESALQ; ANDERSON FERREIRA, USP. |
|
Título: |
Large woody debris input and its influence on channel structure in agricultural lands of Southeast Brazil. |
|
Ano de publicação: |
2011 |
|
Fonte/Imprenta: |
Environmental Management, v. 48, n. 4, p. 750-763, Oct. 2011. |
|
DOI: |
10.1007/s00267-011-9730-4 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Riparian forests are important for the structure and functioning of stream ecosystems, providing structural components such as large woody debris (LWD). Changes in these forests will cause modifications in the LWD input to streams, affecting their structure. In order to assess the influence of riparian forests changes in LWD supply, 15 catchments (third and fourth order) with riparian forests at different conservation levels were selected for sampling. In each catchment we quantified the abundance, volume and diameter of LWD in stream channels; the number, area and volume of pools formed by LWD and basal area and tree diameter of riparian forest. We found that riparian forests were at a secondary successional stage with predominantly young trees (diameter at breast height \10 cm) in all studied streams. Results showed that basal area and diameter of riparian forest differed between the stream groups (forested and non-forested), but tree density did not differ between groups. Differences were also observed in LWD abundance, volume, frequency of LWD pools with subunits and area and volume of LWD pools. LWD diameter, LWD that form pools diameter and frequency of LWD pools without subunits did not differ between stream groups. Regression analyses showed that LWD abundance and volume, and frequency of LWD pools (with and without subunits) were positively related with the proportion of riparian forest. LWD diameter was not correlated to riparian tree diameter. The frequency of LWD pools was correlated to the abundance and volume of LWD, but characteristics of these pools (area and volume) were not correlated to the diameter of LWD that formed the pools. These results show that alterations in riparian forest cause modifications in the LWD abundance and volume in the stream channel, affecting mainly the structural complexity of these ecosystems (reduction in the number and structural characteristics of LWD pools). Our results also demonstrate that riparian forest conservation actions must consider not only its extension, but also successional stage to guarantee the quantity and quality of LWD necessary to enable the structuring of stream channels. MenosRiparian forests are important for the structure and functioning of stream ecosystems, providing structural components such as large woody debris (LWD). Changes in these forests will cause modifications in the LWD input to streams, affecting their structure. In order to assess the influence of riparian forests changes in LWD supply, 15 catchments (third and fourth order) with riparian forests at different conservation levels were selected for sampling. In each catchment we quantified the abundance, volume and diameter of LWD in stream channels; the number, area and volume of pools formed by LWD and basal area and tree diameter of riparian forest. We found that riparian forests were at a secondary successional stage with predominantly young trees (diameter at breast height \10 cm) in all studied streams. Results showed that basal area and diameter of riparian forest differed between the stream groups (forested and non-forested), but tree density did not differ between groups. Differences were also observed in LWD abundance, volume, frequency of LWD pools with subunits and area and volume of LWD pools. LWD diameter, LWD that form pools diameter and frequency of LWD pools without subunits did not differ between stream groups. Regression analyses showed that LWD abundance and volume, and frequency of LWD pools (with and without subunits) were positively related with the proportion of riparian forest. LWD diameter was not correlated to riparian tree diameter. The frequency of LWD... Mostrar Tudo |
|
Palavras-Chave: |
Mata Atlântica. |
|
Thesagro: |
Mata Ciliar. |
|
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
|
Marc: |
LEADER 02827naa a2200205 a 4500
001 1920875
005 2022-11-11
008 2011 bl uuuu u00u1 u #d
024 7 $a10.1007/s00267-011-9730-4$2DOI
100 1 $aPAULA, F. R. de
245 $aLarge woody debris input and its influence on channel structure in agricultural lands of Southeast Brazil.$h[electronic resource]
260 $c2011
520 $aRiparian forests are important for the structure and functioning of stream ecosystems, providing structural components such as large woody debris (LWD). Changes in these forests will cause modifications in the LWD input to streams, affecting their structure. In order to assess the influence of riparian forests changes in LWD supply, 15 catchments (third and fourth order) with riparian forests at different conservation levels were selected for sampling. In each catchment we quantified the abundance, volume and diameter of LWD in stream channels; the number, area and volume of pools formed by LWD and basal area and tree diameter of riparian forest. We found that riparian forests were at a secondary successional stage with predominantly young trees (diameter at breast height \10 cm) in all studied streams. Results showed that basal area and diameter of riparian forest differed between the stream groups (forested and non-forested), but tree density did not differ between groups. Differences were also observed in LWD abundance, volume, frequency of LWD pools with subunits and area and volume of LWD pools. LWD diameter, LWD that form pools diameter and frequency of LWD pools without subunits did not differ between stream groups. Regression analyses showed that LWD abundance and volume, and frequency of LWD pools (with and without subunits) were positively related with the proportion of riparian forest. LWD diameter was not correlated to riparian tree diameter. The frequency of LWD pools was correlated to the abundance and volume of LWD, but characteristics of these pools (area and volume) were not correlated to the diameter of LWD that formed the pools. These results show that alterations in riparian forest cause modifications in the LWD abundance and volume in the stream channel, affecting mainly the structural complexity of these ecosystems (reduction in the number and structural characteristics of LWD pools). Our results also demonstrate that riparian forest conservation actions must consider not only its extension, but also successional stage to guarantee the quantity and quality of LWD necessary to enable the structuring of stream channels.
650 $aMata Ciliar
653 $aMata Atlântica
700 1 $aFERRAZ, S. F. de B.
700 1 $aGERHARD, P.
700 1 $aVETTORAZZI, C. A.
700 1 $aFERREIRA, A.
773 $tEnvironmental Management$gv. 48, n. 4, p. 750-763, Oct. 2011.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Milho e Sorgo. |
|
Data corrente: |
03/11/2017 |
|
Data da última atualização: |
03/11/2017 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
B - 3 |
|
Autoria: |
SOUZA, I. R. P. de; MACEDO, G. A. R.; BARBOSA, M. H. P.; BARROS, B. de A.; CARVALHO, S. G. M.; XAVIER, A. da S.; GONÇALVES, I. A. M. |
|
Afiliação: |
ISABEL REGINA PRAZERES DE SOUZA, CNPMS; Geraldo Antônio Resende Macêdo, Epamig; Márcio Henrique Pereira Barbosa, Universidade Federal de Viçosa; BEATRIZ DE ALMEIDA BARROS, CNPMS; Samanta Gabriela Medeiros Carvalho, UFLA; André da Silva Xavier, Bolsista; Isabella Aparecida Maia Gonçalves, UNIFEMM. |
|
Título: |
Reaction of sugarcane genotypes to strains of the sugarcane mosaic virus. |
|
Ano de publicação: |
2017 |
|
Fonte/Imprenta: |
International Journal of Current Research, v. 9, n. 10, p. 59112-59119, Oct. 2017. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Sugarcane crops are cultivated in nearly all tropical and sub-tropical regions worldwide andhave a prominent position in the agricultural scenario in Brazil. However, viral diseases can threaten the production of this important commodity leading to large production losses. In the present study, we evaluatedthe reaction of 20 sugarcane genotypes independently inoculated with two different strains of Sugarcane mosaic virus (SCMV) isolated from naturally infected sugarcane (SCMV-SGC) and maize (SCMV-MZ). The maize inbred line L19 was used as a control of susceptibility to the SCMV-MZ strain. Symptoms intensity was evaluated through a visual scale with three levels of severity: weak, intermediate, and intense. The viral infection was confirmed by PCR and DNA sequencing. We observed that, although both strains were able to infect sugarcane genotypes and the maize inbred line, SCMV-SGC was more aggressive, resulting in only four resistant genotypes: IN84-58 (S. spontaneum), RB855536, RB 928064, and SP71-6163. Thirteen genotypes were resistant to SCMV-MZ: IN84-58 (S.spontaneum), NA56-79, CB47-355,CB49-260, RB72454, RB855113, RB855536, RB867515, RB928064, SP70-1143, SP71-1406, SP71-6163, and SP81-3250. This is the first report showingSCMV strains capable of cross-infectingand causing mosaic in sugarcane and maize. Our data emphasize the importance of continuous monitoring and screening for virus resistantgenotypes to be used in breeding programs for the development of new resistant cultivars. MenosSugarcane crops are cultivated in nearly all tropical and sub-tropical regions worldwide andhave a prominent position in the agricultural scenario in Brazil. However, viral diseases can threaten the production of this important commodity leading to large production losses. In the present study, we evaluatedthe reaction of 20 sugarcane genotypes independently inoculated with two different strains of Sugarcane mosaic virus (SCMV) isolated from naturally infected sugarcane (SCMV-SGC) and maize (SCMV-MZ). The maize inbred line L19 was used as a control of susceptibility to the SCMV-MZ strain. Symptoms intensity was evaluated through a visual scale with three levels of severity: weak, intermediate, and intense. The viral infection was confirmed by PCR and DNA sequencing. We observed that, although both strains were able to infect sugarcane genotypes and the maize inbred line, SCMV-SGC was more aggressive, resulting in only four resistant genotypes: IN84-58 (S. spontaneum), RB855536, RB 928064, and SP71-6163. Thirteen genotypes were resistant to SCMV-MZ: IN84-58 (S.spontaneum), NA56-79, CB47-355,CB49-260, RB72454, RB855113, RB855536, RB867515, RB928064, SP70-1143, SP71-1406, SP71-6163, and SP81-3250. This is the first report showingSCMV strains capable of cross-infectingand causing mosaic in sugarcane and maize. Our data emphasize the importance of continuous monitoring and screening for virus resistantgenotypes to be used in breeding programs for the development of new resistant ... Mostrar Tudo |
|
Thesagro: |
Cana de açucar; Doença de planta; Mosaico. |
|
Categoria do assunto: |
H Saúde e Patologia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/166067/1/Reaction-sugarcane.pdf
|
|
Marc: |
LEADER 02211naa a2200229 a 4500
001 2078844
005 2017-11-03
008 2017 bl uuuu u00u1 u #d
100 1 $aSOUZA, I. R. P. de
245 $aReaction of sugarcane genotypes to strains of the sugarcane mosaic virus.$h[electronic resource]
260 $c2017
520 $aSugarcane crops are cultivated in nearly all tropical and sub-tropical regions worldwide andhave a prominent position in the agricultural scenario in Brazil. However, viral diseases can threaten the production of this important commodity leading to large production losses. In the present study, we evaluatedthe reaction of 20 sugarcane genotypes independently inoculated with two different strains of Sugarcane mosaic virus (SCMV) isolated from naturally infected sugarcane (SCMV-SGC) and maize (SCMV-MZ). The maize inbred line L19 was used as a control of susceptibility to the SCMV-MZ strain. Symptoms intensity was evaluated through a visual scale with three levels of severity: weak, intermediate, and intense. The viral infection was confirmed by PCR and DNA sequencing. We observed that, although both strains were able to infect sugarcane genotypes and the maize inbred line, SCMV-SGC was more aggressive, resulting in only four resistant genotypes: IN84-58 (S. spontaneum), RB855536, RB 928064, and SP71-6163. Thirteen genotypes were resistant to SCMV-MZ: IN84-58 (S.spontaneum), NA56-79, CB47-355,CB49-260, RB72454, RB855113, RB855536, RB867515, RB928064, SP70-1143, SP71-1406, SP71-6163, and SP81-3250. This is the first report showingSCMV strains capable of cross-infectingand causing mosaic in sugarcane and maize. Our data emphasize the importance of continuous monitoring and screening for virus resistantgenotypes to be used in breeding programs for the development of new resistant cultivars.
650 $aCana de açucar
650 $aDoença de planta
650 $aMosaico
700 1 $aMACEDO, G. A. R.
700 1 $aBARBOSA, M. H. P.
700 1 $aBARROS, B. de A.
700 1 $aCARVALHO, S. G. M.
700 1 $aXAVIER, A. da S.
700 1 $aGONÇALVES, I. A. M.
773 $tInternational Journal of Current Research$gv. 9, n. 10, p. 59112-59119, Oct. 2017.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
